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SECTION 4 <br /> <br /> <br /> <br /> <br />Surface Water Management Plan Section 4: Assessment of Issues <br />City of Arden Hills <br />WSB Project No. 3455-200 Page 3 <br />Corrective Action 4.4.A. The City will work with RCWD to maintain ongoing inspections, repair <br />of erosion, monitoring, and routine maintenance. <br /> <br /> <br />Problem 4.4.B. A parking lot south of Karth Lake serving a manufacturing business drains to a <br />private road into a flume on a steep hillside, severely undercutting the flume and introducing <br />hillside sediment to Karth Lake. <br /> <br />Corrective Action 4.4.B. The City has met with RCWD and the business, and the business is <br />drafting plans for fixing the erosion and constructing side slope stabilization. <br /> <br /> <br />4.5. Impact of Land Use Practices and Development <br /> <br />Problem 4.5.A As Arden Hills nears full development, it can be challenging for the City to <br />implement stormwater management BMPs to efficiently meet watershed requirements on a site <br />by site basis. <br /> <br />Corrective Action 4.5.A The City will investigate opportunities to implement water quality and <br />volume reduction BMPs during new development and future reconstruction projects. In areas <br />where project specific BMPs will be unfeasible, the City will look into completing regional water <br />quality improvement projects to help meet future stormwater management requirements. <br /> <br />Problem 4.5.B The Arden Hills Twin Cities Army Ammunition Plant (TCAAP) site is in the <br />process of being redeveloped. The site was affected by numerous contaminants that has affected <br />soils, sediment, and groundwater. <br /> <br />Corrective Action 4.5.B As the redevelopment occurs, the City will coordinate with various <br />agencies including RCWD, MPCA, USACE, and Ramsey County to identify groundwater <br />treatment and surface BMPs to treat runoff from the site. <br /> <br />Problem 4.5.C Wetland degradation caused by urbanization. When the quality of the incoming <br />stormwater declines, the wetland’s plant community may become less diverse, retaining only <br />those species that are tolerant of high nutrient and sediment loads. <br /> <br />Corrective Action 4.5.C Degraded wetlands will be identified and potential restoration sites will <br />be prioritized. In Arden Hills, RCWD acts as Local Governmental Unit (LGU) in charge of <br />administering the WCA in their respective jurisdictions. RCWD has completed wetland <br />assessments in recent years and have management plans that the City follows. <br /> <br />Problem 4.5.D Valentine Park rain gardens are not functioning as designed. The rain gardens do <br />not drain when lake levels are high. <br /> <br />Corrective Action 4.5.D The City will investigate the reason behind the rain gardens not <br />functioning and will implement improvements as needed. <br /> <br /> <br />4.6. Education Program <br /> <br />Problem 4.6.A The City of Arden Hills recognizes the need for local water education programs to <br />increase public awareness of local water management and improve the quality of stormwater <br />runoff. <br /> <br />Dr <br />a <br />f <br />t <br /> <br />11 <br />/ <br />2 <br />0 <br />/ <br />2 <br />0 <br />1 <br />7